Danchai Kreungngern และ Anek Hale and Boonyakrit Rattanapun. (2013) Determination ursolic acid and antioxidantin Grass jelly (Mesona procumbens Hemsley.). <i>Food and Applied Bioscience</i>, <i>1</i>(2), 90-101.Danchai Kreungngern และ Anek Hale and Boonyakrit Rattanapun. "Determination ursolic acid and antioxidantin Grass jelly (Mesona procumbens Hemsley.)". Food and Applied Bioscience 1 (2013):90-101.Danchai Kreungngern และ Anek Hale and Boonyakrit Rattanapun. Determination ursolic acid and antioxidantin Grass jelly (Mesona procumbens Hemsley.). Faculty of Agro-Industry:ม.ป.ท. 2013.